ACOUSTICAL i\\i:sti(;ati<:)X oi- tiii; JAr.vxi'.si: r.A^rnoo rii'i:. / 



examine the specinl function of the mouth in producing the 

 varieties of the notes and also to study the effects of the lateral 

 openings in general. The latter part, therefore, may be applied 

 to any other instrument with lateral openings. In addition, the 

 eflect of obstacles placed inside the pii)L> is dealt with, with re- 

 ference to the knots of the syakuhali. 



RESULTS OF THE EXPERIMENTS. 



1. Notes in different Positions. 



The syahuliatl upon which the experiments were made, was 

 of the following dimensions : 



The length of the pipe from end to end =49. 2 cm. 



The distances of the centers of the holes from the upper 

 end = ll).8, 28.4, 28.3, 33..3 and 38.2. cm. 



The mean diameter of the finger-holes = 0.9 cm. 



The diameter of the section immediately inside the mouth = 

 1.9 cm. 



Ditto at the f/orobusi = 1.'') cm. 



Approximate pitches of the notes for all the possible combi- 

 nations of holes for a nearly constant width of the mouth are 

 tabulated as follows : — 



